Subversion-Projekte lars-tiefland.cakephp

Revision

Blame | Letzte Änderung | Log anzeigen | RSS feed

<?php
/* SVN FILE: $Id: set.php 8004 2009-01-16 20:15:21Z gwoo $ */
/**
 * Library of array functions for Cake.
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) :  Rapid Development Framework (http://www.cakephp.org)
 * Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright     Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 * @link          http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
 * @package       cake
 * @subpackage    cake.cake.libs
 * @since         CakePHP(tm) v 1.2.0
 * @version       $Revision: 8004 $
 * @modifiedby    $LastChangedBy: gwoo $
 * @lastmodified  $Date: 2009-01-16 12:15:21 -0800 (Fri, 16 Jan 2009) $
 * @license       http://www.opensource.org/licenses/mit-license.php The MIT License
 */
/**
 * Class used for manipulation of arrays.
 *
 * Long description for class
 *
 * @package       cake
 * @subpackage    cake.cake.libs
 */
class Set extends Object {
/**
 * Deprecated
 *
 */
        var $value = array();
/**
 * This function can be thought of as a hybrid between PHP's array_merge and array_merge_recursive. The difference
 * to the two is that if an array key contains another array then the function behaves recursive (unlike array_merge)
 * but does not do if for keys containing strings (unlike array_merge_recursive). See the unit test for more information.
 *
 * Note: This function will work with an unlimited amount of arguments and typecasts non-array parameters into arrays.
 *
 * @param array $arr1 Array to be merged
 * @param array $arr2 Array to merge with
 * @return array Merged array
 * @access public
 * @static
 */
        function merge($arr1, $arr2 = null) {
                $args = func_get_args();

                $r = (array)current($args);
                while (($arg = next($args)) !== false) {
                        foreach ((array)$arg as $key => $val)    {
                                if (is_array($val) && isset($r[$key]) && is_array($r[$key])) {
                                        $r[$key] = Set::merge($r[$key], $val);
                                } elseif (is_int($key)) {
                                        $r[] = $val;
                                } else {
                                        $r[$key] = $val;
                                }
                        }
                }
                return $r;
        }
/**
 * Filters empty elements out of a route array, excluding '0'.
 *
 * @param mixed $var Either an array to filter, or value when in callback
 * @param boolean $isArray Force to tell $var is an array when $var is empty
 * @return mixed Either filtered array, or true/false when in callback
 * @access public
 * @static
 */
        function filter($var, $isArray = false) {
                if (is_array($var) && (!empty($var) || $isArray)) {
                        return array_filter($var, array('Set', 'filter'));
                }

                if ($var === 0 || $var === '0' || !empty($var)) {
                        return true;
                }
                return false;
        }
/**
 * Pushes the differences in $array2 onto the end of $array
 *
 * @param mixed $array Original array
 * @param mixed $array2 Differences to push
 * @return array Combined array
 * @access public
 * @static
 */
        function pushDiff($array, $array2) {
                if (empty($array) && !empty($array2)) {
                        return $array2;
                }
                if (!empty($array) && !empty($array2)) {
                        foreach ($array2 as $key => $value) {
                                if (!array_key_exists($key, $array)) {
                                        $array[$key] = $value;
                                } else {
                                        if (is_array($value)) {
                                                $array[$key] = Set::pushDiff($array[$key], $array2[$key]);
                                        }
                                }
                        }
                }
                return $array;
        }
/**
 * Maps the contents of the Set object to an object hierarchy.
 * Maintains numeric keys as arrays of objects
 *
 * @param string $class A class name of the type of object to map to
 * @param string $tmp A temporary class name used as $class if $class is an array
 * @return object Hierarchical object
 * @access public
 * @static
 */
        function map($class = 'stdClass', $tmp = 'stdClass') {
                if (is_array($class)) {
                        $val = $class;
                        $class = $tmp;
                }

                if (empty($val)) {
                        return null;
                }
                return Set::__map($val, $class);
        }

/**
 * Get the array value of $array. If $array is null, it will return
 * the current array Set holds. If it is an object of type Set, it
 * will return its value. If it is another object, its object variables.
 * If it is anything else but an array, it will return an array whose first
 * element is $array.
 *
 * @param mixed $array Data from where to get the array.
 * @return array Array from $array.
 * @access private
 */
        function __array($array) {
                if (empty($array)) {
                        $array = array();
                } elseif (is_object($array)) {
                        $array = get_object_vars($array);
                } elseif (!is_array($array)) {
                        $array = array($array);
                }
                return $array;
        }

/**
 * Maps the given value as an object. If $value is an object,
 * it returns $value. Otherwise it maps $value as an object of
 * type $class, and if primary assign _name_ $key on first array.
 * If $value is not empty, it will be used to set properties of
 * returned object (recursively). If $key is numeric will maintain array
 * structure
 *
 * @param mixed $value Value to map
 * @param string $class Class name
 * @param boolean $primary whether to assign first array key as the _name_
 * @return mixed Mapped object
 * @access private
 * @static
 */
        function __map(&$array, $class, $primary = false) {
                if ($class === true) {
                        $out = new stdClass;
                } else {
                        $out = new $class;
                }
                if (is_array($array)) {
                        $keys = array_keys($array);
                        foreach ($array as $key => $value) {
                                if ($keys[0] === $key && $class !== true) {
                                        $primary = true;
                                }
                                if (is_numeric($key)) {
                                        if (is_object($out)) {
                                                $out = get_object_vars($out);
                                        }
                                        $out[$key] = Set::__map($value, $class);
                                        if (is_object($out[$key])) {
                                                if ($primary !== true && is_array($value) && Set::countDim($value, true) === 2) {
                                                        if (!isset($out[$key]->_name_)) {
                                                                $out[$key]->_name_ = $primary;
                                                        }
                                                }
                                        }
                                } elseif (is_array($value)) {
                                        if ($primary === true) {
                                                if (!isset($out->_name_)) {
                                                        $out->_name_ = $key;
                                                }
                                                $primary = false;
                                                foreach ($value as $key2 => $value2) {
                                                        $out->{$key2} = Set::__map($value2, true);
                                                }
                                        } else {
                                                if (!is_numeric($key)) {
                                                        $out->{$key} = Set::__map($value, true, $key);
                                                        if (is_object($out->{$key}) && !is_numeric($key)) {
                                                                if (!isset($out->{$key}->_name_)) {
                                                                        $out->{$key}->_name_ = $key;
                                                                }
                                                        }
                                                } else {
                                                        $out->{$key} = Set::__map($value, true);
                                                }
                                        }
                                } else {
                                        $out->{$key} = $value;
                                }
                        }
                } else {
                        $out = $array;
                }
                return $out;
        }
/**
 * Checks to see if all the values in the array are numeric
 *
 * @param array $array The array to check.  If null, the value of the current Set object
 * @return boolean true if values are numeric, false otherwise
 * @access public
 * @static
 */
        function numeric($array = null) {
                if (empty($array)) {
                        return null;
                }

                if ($array === range(0, count($array) - 1)) {
                        return true;
                }

                $numeric = true;
                $keys = array_keys($array);
                $count = count($keys);

                for ($i = 0; $i < $count; $i++) {
                        if (!is_numeric($array[$keys[$i]])) {
                                $numeric = false;
                                break;
                        }
                }
                return $numeric;
        }
/**
 * Return a value from an array list if the key exists.
 *
 * If a comma separated $list is passed arrays are numeric with the key of the first being 0
 * $list = 'no, yes' would translate to  $list = array(0 => 'no', 1 => 'yes');
 *
 * If an array is used, keys can be strings example: array('no' => 0, 'yes' => 1);
 *
 * $list defaults to 0 = no 1 = yes if param is not passed
 *
 * @param mixed $select Key in $list to return
 * @param mixed $list can be an array or a comma-separated list.
 * @return string the value of the array key or null if no match
 * @access public
 * @static
 */
        function enum($select, $list = null) {
                if (empty($list)) {
                        $list = array('no', 'yes');
                }

                $return = null;
                $list = Set::normalize($list, false);

                if (array_key_exists($select, $list)) {
                        $return = $list[$select];
                }
                return $return;
        }
/**
 * Returns a series of values extracted from an array, formatted in a format string.
 *
 * @param array         $data Source array from which to extract the data
 * @param string        $format Format string into which values will be inserted, see sprintf()
 * @param array         $keys An array containing one or more Set::extract()-style key paths
 * @return array        An array of strings extracted from $keys and formatted with $format
 * @access public
 * @static
 */
        function format($data, $format, $keys) {

                $extracted = array();
                $count = count($keys);

                if (!$count) {
                        return;
                }

                for ($i = 0; $i < $count; $i++) {
                        $extracted[] = Set::extract($data, $keys[$i]);
                }
                $out = array();
                $data = $extracted;
                $count = count($data[0]);

                if (preg_match_all('/\{([0-9]+)\}/msi', $format, $keys2) && isset($keys2[1])) {
                        $keys = $keys2[1];
                        $format = preg_split('/\{([0-9]+)\}/msi', $format);
                        $count2 = count($format);

                        for ($j = 0; $j < $count; $j++) {
                                $formatted = '';
                                for ($i = 0; $i <= $count2; $i++) {
                                        if (isset($format[$i])) {
                                                $formatted .= $format[$i];
                                        }
                                        if (isset($keys[$i]) && isset($data[$keys[$i]][$j])) {
                                                $formatted .= $data[$keys[$i]][$j];
                                        }
                                }
                                $out[] = $formatted;
                        }
                } else {
                        $count2 = count($data);
                        for ($j = 0; $j < $count; $j++) {
                                $args = array();
                                for ($i = 0; $i < $count2; $i++) {
                                        if (isset($data[$i][$j])) {
                                                $args[] = $data[$i][$j];
                                        }
                                }
                                $out[] = vsprintf($format, $args);
                        }
                }
                return $out;
        }
/**
 * Implements partial support for XPath 2.0. If $path is an array or $data is empty it the call is delegated to Set::classicExtract.
 *
 * Currently implemented selectors:
 * - /User/id (similar to the classic {n}.User.id)
 * - /User[2]/name (selects the name of the second User)
 * - /User[id>2] (selects all Users with an id > 2)
 * - /User[id>2][<5] (selects all Users with an id > 2 but < 5)
 * - /Post/Comment[author_name=john]/../name (Selects the name of all Posts that have at least one Comment written by john)
 * - /Posts[name] (Selects all Posts that have a 'name' key)
 * - /Comment/.[1] (Selects the contents of the first comment)
 * - /Comment/.[:last] (Selects the last comment)
 * - /Comment/.[:first] (Selects the first comment)
 * - /Comment[text=/cakephp/i] (Selects the all comments that have a text matching the regex /cakephp/i)
 * - /Comment/@* (Selects the all key names of all comments)
 *
 * Other limitations:
 * - Only absolute paths starting with a single '/' are supported right now
 *
 * Warning: Even so it has plenty of unit tests the XPath support has not gone through a lot of real-world testing. Please report
 * Bugs as you find them. Suggestions for additional features to imlement are also very welcome!
 *
 * @param string $path An absolute XPath 2.0 path
 * @param string $data An array of data to extract from
 * @param string $options Currently only supports 'flatten' which can be disabled for higher XPath-ness
 * @return array An array of matched items
 * @access public
 * @static
 */
        function extract($path, $data = null, $options = array()) {
                if (empty($data) && is_string($path) && $path{0} === '/') {
                        return array();
                }
                if (is_string($data) && $data{0} === '/') {
                        $tmp = $path;
                        $path = $data;
                        $data = $tmp;
                }
                if (is_array($path) || empty($data) || is_object($path) || empty($path)) {
                        return Set::classicExtract($path, $data);
                }
                if ($path === '/') {
                        return $data;
                }
                $contexts = $data;
                $options = array_merge(array('flatten' => true), $options);
                if (!isset($contexts[0])) {
                        $contexts = array($data);
                }
                $tokens = array_slice(preg_split('/(?<!=)\/(?![a-z]*\])/', $path), 1);

                do {
                        $token = array_shift($tokens);
                        $conditions = false;
                        if (preg_match_all('/\[([^\]]+)\]/', $token, $m)) {
                                $conditions = $m[1];
                                $token = substr($token, 0, strpos($token, '['));
                        }
                        $matches = array();
                        foreach ($contexts as $key => $context) {
                                if (!isset($context['trace'])) {
                                        $context = array('trace' => array(null), 'item' => $context, 'key' => $key);
                                }
                                if ($token === '..') {
                                        if (count($context['trace']) == 1) {
                                                $context['trace'][] = $context['key'];
                                        }
                                        $parent = join('/', $context['trace']) . '/.';
                                        $context['item'] = Set::extract($parent, $data);
                                        $context['key'] = array_pop($context['trace']);
                                        if (isset($context['trace'][1]) && $context['trace'][1] > 0) {
                                                $context['item'] = $context['item'][0];
                                        } else {
                                                $context['item'] = $context['item'][$key];
                                        }
                                        $matches[] = $context;
                                        continue;
                                }
                                $match = false;
                                if ($token === '@*' && is_array($context['item'])) {
                                        $matches[] = array(
                                                'trace' => array_merge($context['trace'], (array)$key),
                                                'key' => $key,
                                                'item' => array_keys($context['item']),
                                        );
                                } elseif (is_array($context['item']) && array_key_exists($token, $context['item'])) {
                                        $items = $context['item'][$token];
                                        if (!is_array($items)) {
                                                $items = array($items);
                                        } elseif (!isset($items[0])) {
                                                $current = current($items);
                                                if ((is_array($current) && count($items) <= 1) || !is_array($current)) {
                                                        $items = array($items);
                                                }
                                        }

                                        foreach ($items as $key => $item) {
                                                $ctext = array($context['key']);
                                                if (!is_numeric($key)) {
                                                        $ctext[] = $token;
                                                        $token = array_shift($tokens);
                                                        if (isset($items[$token])) {
                                                                $ctext[] = $token;
                                                                $item = $items[$token];
                                                                $matches[] = array(
                                                                        'trace' => array_merge($context['trace'], $ctext),
                                                                        'key' => $key,
                                                                        'item' => $item,
                                                                );
                                                                break;
                                                        }
                                                } else {
                                                        $key = $token;
                                                }

                                                $matches[] = array(
                                                        'trace' => array_merge($context['trace'], $ctext),
                                                        'key' => $key,
                                                        'item' => $item,
                                                );
                                        }
                                } elseif (($key === $token || (ctype_digit($token) && $key == $token) || $token === '.')) {
                                        $context['trace'][] = $key;
                                        $matches[] = array(
                                                'trace' => $context['trace'],
                                                'key' => $key,
                                                'item' => $context['item'],
                                        );
                                }
                        }
                        if ($conditions) {
                                foreach ($conditions as $condition) {
                                        $filtered = array();
                                        $length = count($matches);
                                        foreach ($matches as $i => $match) {
                                                if (Set::matches(array($condition), $match['item'], $i + 1, $length)) {
                                                        $filtered[] = $match;
                                                }
                                        }
                                        $matches = $filtered;
                                }
                        }
                        $contexts = $matches;

                        if (empty($tokens)) {
                                break;
                        }
                } while(1);

                $r = array();

                foreach ($matches as $match) {
                        if ((!$options['flatten'] || is_array($match['item'])) && !is_int($match['key'])) {
                                $r[] = array($match['key'] => $match['item']);
                        } else {
                                $r[] = $match['item'];
                        }
                }
                return $r;
        }
/**
 * This function can be used to see if a single item or a given xpath match certain conditions.
 *
 * @param mixed $conditions An array of condition strings or an XPath expression
 * @param array $data  An array of data to execute the match on
 * @param integer $i Optional: The 'nth'-number of the item being matched.
 * @return boolean
 * @access public
 * @static
 */
        function matches($conditions, $data = array(), $i = null, $length = null) {
                if (empty($conditions)) {
                        return true;
                }
                if (is_string($conditions)) {
                        return !!Set::extract($conditions, $data);
                }
                foreach ($conditions as $condition) {
                        if ($condition === ':last') {
                                if ($i != $length) {
                                        return false;
                                }
                                continue;
                        } elseif ($condition === ':first') {
                                if ($i != 1) {
                                        return false;
                                }
                                continue;
                        }
                        if (!preg_match('/(.+?)([><!]?[=]|[><])(.*)/', $condition, $match)) {
                                if (ctype_digit($condition)) {
                                        if ($i != $condition) {
                                                return false;
                                        }
                                } elseif (preg_match_all('/(?:^[0-9]+|(?<=,)[0-9]+)/', $condition, $matches)) {
                                        return in_array($i, $matches[0]);
                                } elseif (!array_key_exists($condition, $data)) {
                                        return false;
                                }
                                continue;
                        }
                        list(,$key,$op,$expected) = $match;
                        if (!isset($data[$key])) {
                                return false;
                        }

                        $val = $data[$key];

                        if ($op === '=' && $expected && $expected{0} === '/') {
                                return preg_match($expected, $val);
                        }
                        if ($op === '=' && $val != $expected) {
                                return false;
                        }
                        if ($op === '!=' && $val == $expected) {
                                return false;
                        }
                        if ($op === '>' && $val <= $expected) {
                                return false;
                        }
                        if ($op === '<' && $val >= $expected) {
                                return false;
                        }
                        if ($op === '<=' && $val > $expected) {
                                return false;
                        }
                        if ($op === '>=' && $val < $expected) {
                                return false;
                        }
                }
                return true;
        }
/**
 * Gets a value from an array or object that is contained in a given path using an array path syntax, i.e.:
 * "{n}.Person.{[a-z]+}" - Where "{n}" represents a numeric key, "Person" represents a string literal,
 * and "{[a-z]+}" (i.e. any string literal enclosed in brackets besides {n} and {s}) is interpreted as
 * a regular expression.
 *
 * @param array $data Array from where to extract
 * @param mixed $path As an array, or as a dot-separated string.
 * @return array Extracted data
 * @access public
 * @static
 */
        function classicExtract($data, $path = null) {
                if (empty($path)) {
                        return $data;
                }
                if (is_object($data)) {
                        $data = get_object_vars($data);
                }
                if (!is_array($data)) {
                        return $data;
                }

                if (!is_array($path)) {
                        if (!class_exists('String')) {
                                App::import('Core', 'String');
                        }
                        $path = String::tokenize($path, '.', '{', '}');
                }
                $tmp = array();

                if (!is_array($path) || empty($path)) {
                        return null;
                }

                foreach ($path as $i => $key) {
                        if (is_numeric($key) && intval($key) > 0 || $key === '0') {
                                if (isset($data[intval($key)])) {
                                        $data = $data[intval($key)];
                                } else {
                                        return null;
                                }
                        } elseif ($key === '{n}') {
                                foreach ($data as $j => $val) {
                                        if (is_int($j)) {
                                                $tmpPath = array_slice($path, $i + 1);
                                                if (empty($tmpPath)) {
                                                        $tmp[] = $val;
                                                } else {
                                                        $tmp[] = Set::classicExtract($val, $tmpPath);
                                                }
                                        }
                                }
                                return $tmp;
                        } elseif ($key === '{s}') {
                                foreach ($data as $j => $val) {
                                        if (is_string($j)) {
                                                $tmpPath = array_slice($path, $i + 1);
                                                if (empty($tmpPath)) {
                                                        $tmp[] = $val;
                                                } else {
                                                        $tmp[] = Set::classicExtract($val, $tmpPath);
                                                }
                                        }
                                }
                                return $tmp;
                        } elseif (false !== strpos($key,'{') && false !== strpos($key,'}')) {
                                $pattern = substr($key, 1, -1);

                                foreach ($data as $j => $val) {
                                        if (preg_match('/^'.$pattern.'/s', $j) !== 0) {
                                                $tmpPath = array_slice($path, $i + 1);
                                                if (empty($tmpPath)) {
                                                        $tmp[$j] = $val;
                                                } else {
                                                        $tmp[$j] = Set::classicExtract($val, $tmpPath);
                                                }
                                        }
                                }
                                return $tmp;
                        } else {
                                if (isset($data[$key])) {
                                        $data = $data[$key];
                                } else {
                                        return null;
                                }
                        }
                }
                return $data;
        }
/**
 * Inserts $data into an array as defined by $path.
 *
 * @param mixed $list Where to insert into
 * @param mixed $path A dot-separated string.
 * @param array $data Data to insert
 * @return array
 * @access public
 * @static
 */
        function insert($list, $path, $data = null) {
                if (!is_array($path)) {
                        $path = explode('.', $path);
                }
                $_list =& $list;

                foreach ($path as $i => $key) {
                        if (is_numeric($key) && intval($key) > 0 || $key === '0') {
                                $key = intval($key);
                        }
                        if ($i === count($path) - 1) {
                                $_list[$key] = $data;
                        } else {
                                if (!isset($_list[$key])) {
                                        $_list[$key] = array();
                                }
                                $_list =& $_list[$key];
                        }
                }
                return $list;
        }
/**
 * Removes an element from a Set or array as defined by $path.
 *
 * @param mixed $list From where to remove
 * @param mixed $path A dot-separated string.
 * @return array Array with $path removed from its value
 * @access public
 * @static
 */
        function remove($list, $path = null) {
                if (empty($path)) {
                        return $list;
                }
                if (!is_array($path)) {
                        $path = explode('.', $path);
                }
                $_list =& $list;

                foreach ($path as $i => $key) {
                        if (is_numeric($key) && intval($key) > 0 || $key === '0') {
                                $key = intval($key);
                        }
                        if ($i === count($path) - 1) {
                                unset($_list[$key]);
                        } else {
                                if (!isset($_list[$key])) {
                                        return $list;
                                }
                                $_list =& $_list[$key];
                        }
                }
                return $list;
        }
/**
 * Checks if a particular path is set in an array
 *
 * @param mixed $data Data to check on
 * @param mixed $path A dot-separated string.
 * @return boolean true if path is found, false otherwise
 * @access public
 * @static
 */
        function check($data, $path = null) {
                if (empty($path)) {
                        return $data;
                }
                if (!is_array($path)) {
                        $path = explode('.', $path);
                }

                foreach ($path as $i => $key) {
                        if (is_numeric($key) && intval($key) > 0 || $key === '0') {
                                $key = intval($key);
                        }
                        if ($i === count($path) - 1) {
                                return (is_array($data) && array_key_exists($key, $data));
                        }

                        if (!is_array($data) || !array_key_exists($key, $data)) {
                                return false;
                        }
                        $data =& $data[$key];
                }
                return true;
        }
/**
 * Computes the difference between a Set and an array, two Sets, or two arrays
 *
 * @param mixed $val1 First value
 * @param mixed $val2 Second value
 * @return array Computed difference
 * @access public
 * @static
 */
        function diff($val1, $val2 = null) {
                if (empty($val1)) {
                        return (array)$val2;
                }
                if (empty($val2)) {
                        return (array)$val1;
                }
                $out = array();

                foreach ($val1 as $key => $val) {
                        $exists = array_key_exists($key, $val2);

                        if ($exists && $val2[$key] != $val) {
                                $out[$key] = $val;
                        } elseif (!$exists) {
                                $out[$key] = $val;
                        }
                        unset($val2[$key]);
                }

                foreach ($val2 as $key => $val) {
                        if (!array_key_exists($key, $out)) {
                                $out[$key] = $val;
                        }
                }
                return $out;
        }
/**
 * Determines if two Sets or arrays are equal
 *
 * @param array $val1 First value
 * @param array $val2 Second value
 * @return boolean true if they are equal, false otherwise
 * @access public
 * @static
 */
        function isEqual($val1, $val2 = null) {
                return ($val1 == $val2);
        }
/**
 * Determines if one Set or array contains the exact keys and values of another.
 *
 * @param array $val1 First value
 * @param array $val2 Second value
 * @return boolean true if $val1 contains $val2, false otherwise
 * @access public
 * @static
 */
        function contains($val1, $val2 = null) {
                if (empty($val1) || empty($val2)) {
                        return false;
                }

                foreach ($val2 as $key => $val) {
                        if (is_numeric($key)) {
                                Set::contains($val, $val1);
                        } else {
                                if (!isset($val1[$key]) || $val1[$key] != $val) {
                                        return false;
                                }
                        }
                }
                return true;
        }
/**
 * Counts the dimensions of an array. If $all is set to false (which is the default) it will
 * only consider the dimension of the first element in the array.
 *
 * @param array $array Array to count dimensions on
 * @param boolean $all Set to true to count the dimension considering all elements in array
 * @param integer $count Start the dimension count at this number
 * @return integer The number of dimensions in $array
 * @access public
 * @static
 */
        function countDim($array = null, $all = false, $count = 0) {
                if ($all) {
                        $depth = array($count);
                        if (is_array($array) && reset($array) !== false) {
                                foreach ($array as $value) {
                                        $depth[] = Set::countDim($value, true, $count + 1);
                                }
                        }
                        $return = max($depth);
                } else {
                        if (is_array(reset($array))) {
                                $return = Set::countDim(reset($array)) + 1;
                        } else {
                                $return = 1;
                        }
                }
                return $return;
        }
/**
 * Normalizes a string or array list.
 *
 * @param mixed $list List to normalize
 * @param boolean $assoc If true, $list will be converted to an associative array
 * @param string $sep If $list is a string, it will be split into an array with $sep
 * @param boolean $trim If true, separated strings will be trimmed
 * @return array
 * @access public
 * @static
 */
        function normalize($list, $assoc = true, $sep = ',', $trim = true) {
                if (is_string($list)) {
                        $list = explode($sep, $list);
                        if ($trim) {
                                foreach ($list as $key => $value) {
                                        $list[$key] = trim($value);
                                }
                        }
                        if ($assoc) {
                                return Set::normalize($list);
                        }
                } elseif (is_array($list)) {
                        $keys = array_keys($list);
                        $count = count($keys);
                        $numeric = true;

                        if (!$assoc) {
                                for ($i = 0; $i < $count; $i++) {
                                        if (!is_int($keys[$i])) {
                                                $numeric = false;
                                                break;
                                        }
                                }
                        }
                        if (!$numeric || $assoc) {
                                $newList = array();
                                for ($i = 0; $i < $count; $i++) {
                                        if (is_int($keys[$i])) {
                                                $newList[$list[$keys[$i]]] = null;
                                        } else {
                                                $newList[$keys[$i]] = $list[$keys[$i]];
                                        }
                                }
                                $list = $newList;
                        }
                }
                return $list;
        }
/**
 * Creates an associative array using a $path1 as the path to build its keys, and optionally
 * $path2 as path to get the values. If $path2 is not specified, all values will be initialized
 * to null (useful for Set::merge). You can optionally group the values by what is obtained when
 * following the path specified in $groupPath.
 *
 * @param array $data Array from where to extract keys and values
 * @param mixed $path1 As an array, or as a dot-separated string.
 * @param mixed $path2 As an array, or as a dot-separated string.
 * @param string $groupPath As an array, or as a dot-separated string.
 * @return array Combined array
 * @access public
 * @static
 */
        function combine($data, $path1 = null, $path2 = null, $groupPath = null) {
                if (empty($data)) {
                        return array();
                }

                if (is_object($data)) {
                        $data = get_object_vars($data);
                }

                if (is_array($path1)) {
                        $format = array_shift($path1);
                        $keys = Set::format($data, $format, $path1);
                } else {
                        $keys = Set::extract($data, $path1);
                }

                if (!empty($path2) && is_array($path2)) {
                        $format = array_shift($path2);
                        $vals = Set::format($data, $format, $path2);

                } elseif (!empty($path2)) {
                        $vals = Set::extract($data, $path2);

                } else {
                        $count = count($keys);
                        for ($i = 0; $i < $count; $i++) {
                                $vals[$i] = null;
                        }
                }

                if ($groupPath != null) {
                        $group = Set::extract($data, $groupPath);
                        if (!empty($group)) {
                                $c = count($keys);
                                for ($i = 0; $i < $c; $i++) {
                                        if (!isset($group[$i])) {
                                                $group[$i] = 0;
                                        }
                                        if (!isset($out[$group[$i]])) {
                                                $out[$group[$i]] = array();
                                        }
                                        $out[$group[$i]][$keys[$i]] = $vals[$i];
                                }
                                return $out;
                        }
                }

                return array_combine($keys, $vals);
        }
/**
 * Converts an object into an array. If $object is no object, reverse
 * will return the same value.
 *
 * @param object $object Object to reverse
 * @return array
 * @static
 */
        function reverse($object) {
                $out = array();
                if (is_a($object, 'XmlNode')) {
                        $out = $object->toArray();
                        return $out;
                } else if (is_object($object)) {
                        $keys = get_object_vars($object);
                        if (isset($keys['_name_'])) {
                                $identity = $keys['_name_'];
                                unset($keys['_name_']);
                        }
                        $new = array();
                        foreach ($keys as $key => $value) {
                                if (is_array($value)) {
                                        $new[$key] = (array)Set::reverse($value);
                                } else {
                                        if (isset($value->_name_)) {
                                                $new = array_merge($new, Set::reverse($value));
                                        } else {
                                                $new[$key] = Set::reverse($value);
                                        }
                                }
                        }
                        if (isset($identity)) {
                                $out[$identity] = $new;
                        } else {
                                $out = $new;
                        }
                } elseif (is_array($object)) {
                        foreach ($object as $key => $value) {
                                $out[$key] = Set::reverse($value);
                        }
                } else {
                        $out = $object;
                }
                return $out;
        }
/**
 * Collapses a multi-dimensional array into a single dimension, using a delimited array path for
 * each array element's key, i.e. array(array('Foo' => array('Bar' => 'Far'))) becomes
 * array('0.Foo.Bar' => 'Far').
 *
 * @param array $data Array to flatten
 * @param string $separator String used to separate array key elements in a path, defaults to '.'
 * @return array
 * @access public
 * @static
 */
        function flatten($data, $separator = '.') {
                $result = array();
                $path = null;

                if (is_array($separator)) {
                        extract($separator, EXTR_OVERWRITE);
                }

                if (!is_null($path)) {
                        $path .= $separator;
                }

                foreach ($data as $key => $val) {
                        if (is_array($val)) {
                                $result += (array)Set::flatten($val, array(
                                        'separator' => $separator,
                                        'path' => $path . $key
                                ));
                        } else {
                                $result[$path . $key] = $val;
                        }
                }
                return $result;
        }
/**
 * Flattens an array for sorting
 *
 * @param array $results
 * @param string $key
 * @return array
 * @access private
 */
        function __flatten($results, $key = null) {
                $stack = array();
                foreach ($results as $k => $r) {
                        $id = $k;
                        if (!is_null($key)) {
                                $id = $key;
                        }
                        if (is_array($r)) {
                                $stack = array_merge($stack, Set::__flatten($r, $id));
                        } else {
                                $stack[] = array('id' => $id, 'value' => $r);
                        }
                }
                return $stack;
        }
/**
 * Sorts an array by any value, determined by a Set-compatible path
 *
 * @param array $data
 * @param string $path A Set-compatible path to the array value
 * @param string $dir asc/desc
 * @return array
 * @static
 */
        function sort($data, $path, $dir) {
                $result = Set::__flatten(Set::extract($data, $path));
                list($keys, $values) = array(Set::extract($result, '{n}.id'), Set::extract($result, '{n}.value'));
                
                $dir = strtolower($dir);
                if ($dir === 'asc') {
                        $dir = SORT_ASC;
                } elseif ($dir === 'desc') {
                        $dir = SORT_DESC;
                }
                array_multisort($values, $dir, $keys, $dir);
                $sorted = array();

                $keys = array_unique($keys);

                foreach ($keys as $k) {
                        $sorted[] = $data[$k];
                }
                return $sorted;
        }
/**
 * Deprecated, Set class should be called statically
 *
 */
        function &get() {
                trigger_error('get() is deprecated. Set class should be called statically', E_USER_WARNING);
        }
}
?>